Amplitude modulation (AM) is the oldest method of transmitting human voice electronically. In an analog telephone conversation, the voice waves on both sides are modulating the voltage of the ...

Standard active mode-locking is usually implemented by acousto-optic modulators, which, being driven by sinusoidal waveforms, generate harmonic modulations of light amplitude inside the laser cavity.

AM, or amplitude modulation, was the earliest way of sending voice over radio waves. That makes sense because it is easy to modulate a signal and easy to demodulate it, as well. A carbon ...

The finding sheds light on how biological rhythms work together to regulate cellular processes. In AM (amplitude modulation) radio, a wave with constant strength and frequency - called a carrier ...

Researchers from Beihang University in China have developed a spintronic THz emitter featuring a microscale stripe pattern that enables the modulation ... and infrared light in the electromagnetic ...